Loudspeaker



FIG. 1 is a front and side perspective view of a loudspeaker, embodying our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof, the opposite side being a mirror image thereto; and,

FIG. 4 is a top plan view thereof. 

CLAIM The ornamental design for loudspeaker, as shown and described. 